//
//  ViewController.h
//  mainpage
//
//  Created by John Zheng on 2018/5/9.
//  Copyright © 2018年 John Zheng. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController
{
    UIButton *btn_1;
    UIButton *btn2;
    UIButton *btn3;
    UIButton *btn4;
    UIButton *btn5;
    UIButton *btn6;
    UIButton *btn1;
    UIButton *btn_2;
}

@end

